Does anyone know if I can use my smaller T3 body with the T5 head sucessfully withouit modifications? Any positives or negatives in doing so if I can? Thank you all!
Yes, they are interchangeable. The T5 head with the T3 twistie body will only operate on the high setting, while the T3 head on the T5 clickie body will have low and high settings.
T5 head + T3 body = small very punchy light with only 1 setting.